Dynamic backlight control system

Details Dynamic backlight control system Dynamic backlight control system

2006-06-02

2010-11-02

Tran, My-Chau T (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C345S204000, C345S211000, C345S212000

Reexamination Certificate

active

07825891

ABSTRACT:
Embodiments are provided herein which may be utilized to eliminate stray light emissions from an LED while ambient light is being sensed. As such, dynamic backlight control systems for use with an electronic display are presented including: an ambient light sensor for sensing ambient light intensity; a backlight for illuminating the electronic display; a switch for controlling the backlight, the switch configured to set a backlight condition to ON or OFF in response to a backlight-off frequency such that the ambient light sensor senses the ambient light intensity in the absence of the backlight; a logic module for determining a backlight level in response to the ambient light intensity; and a backlight control circuit for adjusting the backlight to the backlight level in response to the ambient light intensity.

REFERENCES:
patent: 5915120 (1999-06-01), Wada et al.
patent: 6388388 (2002-05-01), Weindorf et al.
patent: 6762741 (2004-07-01), Weindorf
patent: 2005/0134547 (2005-06-01), Wyatt
patent: 2006/0132424 (2006-06-01), Foo et al.
patent: 2006/0197735 (2006-09-01), Vuong et al.

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